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Nitrogen-doped hydrochars from shrimp waste as visible-light photocatalysts: Roles of nitrogen species
Chen, Zeliang1,2; Jia, Hongxia3; Guo, Yanchuan4; Li, Yi5; Liu, Zhengang1,2
2022-05-15
Source PublicationENVIRONMENTAL RESEARCH
ISSN0013-9351
Volume208Pages:8
AbstractThe increasing shrimp waste production has caused severe environmental problems. In this study, nitrogen doped hydrochars (NDHCs) were facilely synthesized from shrimp waste and glucose by one-pot hydrothermal carbonization (HTC). The characterizations showed that NDHCs had large surface areas of up to 30.5 m(2) g(-1) with numerous functional groups on their porous surfaces. The nitrogen content (1.3-2.8%) and species distribution in NDHCs were associated with the amount of added glucose. These NDHCs were applied as visible-light-induced photocatalysts, and their photocatalytic performances were evaluated by methylene blue (MB) degradation. The removal rate of MB reached 88.9% after 1 h of visible light radiation by NDHC-1, which was 2.3 times higher than that of glucose-derived hydrochar (GHC). The mechanism study showed that the improved photoactivity of NDHCs was attributed to the increased adsorption capacity by porous surface and the promoted formation of hydroxyl radicals by synergistic effects of quaternary N and pyrrolic N during photocatalysis. This study offered a green approach to preparing tunable, efficient, and low-cost photocatalyst from waste biomass and insight into the photocatalytic mechanism of hydrochar materials.
KeywordWaste biomass Hydrothermal carbonization Nitrogen doping Metal-free photocatalyst Photocatalysis Hydroxyl radicals
DOI10.1016/j.envres.2022.112695
Language英语
WOS KeywordHYDROTHERMAL CARBONIZATION ; GRAPHENE ; CARBONS
Funding ProjectKey Research Program of Chinese Academy of Sciences, China[ZDRW-ZS-2018-1-3] ; Science andTechnology Service Network (STS) Program of Chinese Academy of Sciences,China[KFJ-STS-QYZX-101] ; Shandong Province Key Research and Development Program, China[2021CXGC010803]
WOS Research AreaEnvironmental Sciences & Ecology ; Public, Environmental & Occupational Health
WOS SubjectEnvironmental Sciences ; Public, Environmental & Occupational Health
Funding OrganizationKey Research Program of Chinese Academy of Sciences, China ; Science andTechnology Service Network (STS) Program of Chinese Academy of Sciences,China ; Shandong Province Key Research and Development Program, China
WOS IDWOS:000760190000002
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52253
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Zhengang
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Informat Ctr Minist Ecol & Environm, 1 Yuhui South Rd, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Inst Proc Engn IPE, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zeliang,Jia, Hongxia,Guo, Yanchuan,et al. Nitrogen-doped hydrochars from shrimp waste as visible-light photocatalysts: Roles of nitrogen species[J]. ENVIRONMENTAL RESEARCH,2022,208:8.
APA Chen, Zeliang,Jia, Hongxia,Guo, Yanchuan,Li, Yi,&Liu, Zhengang.(2022).Nitrogen-doped hydrochars from shrimp waste as visible-light photocatalysts: Roles of nitrogen species.ENVIRONMENTAL RESEARCH,208,8.
MLA Chen, Zeliang,et al."Nitrogen-doped hydrochars from shrimp waste as visible-light photocatalysts: Roles of nitrogen species".ENVIRONMENTAL RESEARCH 208(2022):8.
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